How can I find a person in this game who was having a relationship with my husband? I think she didn't know he was married.. but found out and wants to show me receipts #chels #mscricket

So I was completely blindsided by my husband of over 25 years last week.... Apparently he's had this secret online "relationship" with this woman he met in this game for about 9 months. He told her he was divorced. They talked and texted daily on discord and he spent thousands of dollars in the game. They had matching names .. I believe Mr. Cricket (Murdoc_x) and Ms. Cricket (Chels) . The alliance ends in UBB.(I honestly don't know anything about this game)

She did make an anonymous post on Facebook about him saying it was very sexual and she is trying to find me to give me all the info to divorce him. But the admin deleted it. I want to know WTF she's got on him .. but also don't. I'm absolutely devastated and sick about this . I made him move out. Has this happened to anyone else involving Whiteout and Discord?